diff --git a/types/tx/signing/signature_data.go b/types/tx/signing/signature_data.go
index 0dd61fe63459..8b5999e314af 100644
--- a/types/tx/signing/signature_data.go
+++ b/types/tx/signing/signature_data.go
@@ -16,7 +16,7 @@ type SingleSignatureData struct {
 	// SignMode represents the SignMode of the signature
 	SignMode SignMode
 
-	// SignMode represents the SignMode of the signature
+	// Signature is the raw signature.
 	Signature []byte
 }